The practice · Est. 2017
We design homes to be lived in, not just looked at.
Green Code Architects is an architecture and interiors practice designing private houses and residential buildings across London, from the careful remodelling of period homes to new apartment and mixed-use buildings.
Planning record
- 9 yearsof planning, 2017 to 2026
- 476planning applications submitted
- 90%of sites ultimately approved
- 54local planning authorities
Applications by the group's design practices, Oct 2017 to Oct 2026, from council planning registers. 243 of the 270 sites taken to a decision were approved, including on resubmission or appeal.
What we believe
A building should be judged by how well it is lived in
That means rooms of the right proportion, light where it is needed, materials that age well, and details that have been thought through rather than left to site.
- 01
Judged by how it is lived in
A building succeeds or fails in the everyday: the morning light in a kitchen, a stair that is easy to use, a room that is the right size for the life it holds.
- 02
Light, proportion, material
The qualities that endure. We design the height of a room, the depth of a reveal and the fall of daylight as carefully as the plan.
- 03
Architecture and interiors as one
The plan, the joinery, the lighting and the finishes are conceived together, so the house reads as one idea rather than a shell that is furnished later.
- 04
Resolved before site
Details are thought through on paper rather than left to the builder, so the building agreed is the building that is made.
Ten years in the making
From a London studio founded in July 2017 to a practice that has taken 476 planning applications to councils across 54 authorities.
-
2017
Founded in London
Green Code Architects is incorporated on 18 July 2017.
-
2022
3 Gerard Road
A semi-detached house becomes a multi-generational home, with a basement, wrap-around extension and loft.
-
2023
18 Downsway
A detached period house in South Croydon extended for a growing family, keeping its roof form.
-
2024
77-79 Vallance Road
Work begins on a nine-storey mixed-use building by Whitechapel Station.
-
2025
23 Avonmore Road
A redundant Victorian townhouse in a conservation area returned to family life.
-
2026
476 applications
Nine years of planning across 54 local authorities, with 90% of sites ultimately approved.
-
2027
Ten years
The practice marks its tenth anniversary in July 2027.
Directors
Each project is led by a design lead in our London studio from first meeting to completion, with a director involved throughout.
-

Sam De Silva
Chief Operating Officer
-
Daishan De Silva
Managing Director
-

Barry Hayes
Director and Client Relationship Manager
Our studio
Based in north-west London
The practice is part of Green Code Holdings, alongside Green Code Engineering, Green Code Consultants and Green Code Developers. How the group works together
London studio
Unit D, 4 Humber Road, London NW2 6DW. Directors and design leads work here, and client meetings and site visits across London and the Home Counties are led from here.
Careers
Join the studio
We are always pleased to hear from talented designers and technologists. Send your CV and portfolio to info@greencodeholdings.com with the subject line GCA_Vacancy.







